Chinese Journal of Obstetrics and Gynecology, Volume 52, Issue 10,2017, Pages 687-696, doi:10.3760/cma.j.issn.0529-567x.2017.10.008
Chinese Journal of Obstetrics and Gynecology, Volume 52, Issue 10,2017, Pages 714-716, doi:10.3760/cma.j.issn.0529-567x.2017.10.015
Chinese Journal of Obstetrics and Gynecology, Volume 52, Issue 10,2017, Pages 711-713, doi:10.3760/cma.j.issn.0529-567x.2017.10.014
Chinese Journal of Obstetrics and Gynecology, Volume 52, Issue 10,2017, Pages 700-702, doi:10.3760/cma.j.issn.0529-567x.2017.10.010
Chinese Journal of Obstetrics and Gynecology, Volume 52, Issue 10,2017, Pages 662-668, doi:10.3760/cma.j.issn.0529-567x.2017.10.004